Markos has been given to about 1,040 people in the United States since 1880. It was most common in 2008, which makes it a millennial-parent name.
Its best year was 2008, when 41 babies were given the name, ranking 2921st. The typical living American called Markos is about 20 years old today. It is relatively most common in California, where it accounts for 0.00% of births.
Source: US Social Security Administration, national and state name files, 2025 release, and the Office for National Statistics for England and Wales. Etymology researched and written by our editors. Living-population and median-age figures are our own estimates, described in the methodology.